Caster for gymnasium apparatus.



F. MEDART, DEGD.

n. J. MEDART, BxEoUTqR. CASTER FOR GYMNASIUM APPARATUS.

APPLICATION FILED 3313.4, 1907.

Patented Nov. 16, 1909.

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UNITED STATES PATENT OFFICE.

FREDERICK MEDART, OF ST. LOUIS, MISSOURI; EDI/VARD J. 'MEDART, EXECUTOROF SAID FREDERICK IIIEDART, DECEASED, ASSIGNOR TO FRED NIEDARTMANUFACTUR- ING COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OFMISSOURI.

CASTER FOB GYMNASIUM AIIABATUS.

Specification of Letters Patent.

Patented Nov. 16, 1909.

Application filed February 4, 1907. Serial No. 355,544.

To all whomtt may concern:

Be it known that I, Fnnonnron MEDART, a citizen of the United States ofAmerica, and a resident of the city of St. Louis, in the State ofMissouri, have invented certain new and useful Improvements in Castersfor Gymnasium Apparatus, of which the following is a specification.

This invention relates to a caster attachment for gymnasium apparatus,such as vaulting horses, and which require to be occasionally moved fromplace to place on the gymnasium floor. And the present improvement hasfor its object to provide a simple and efficient structural arrangementand combination of parts by means of which the apparatus can beconveniently moved from place to place upon a gymnasium floor, and withwhich a firm and stable rest is given the apparatus when the presentcaster attachment is in its dormant condition, all as will hereinaftermore fully appear.

In the accompanying drawings :Figure 1, is a side elevation partly insection, illustrating the general arrangement of the present inventionas applied to a vaulting horse. F 2, is an enlarged detail longitudinalsection of the supporting base, illustrating the present castermechanism. Fig. 3, is a detail plan view of the same, the post of theapparatus being omitted as well as the cam levers which lower thecasters.

Similar numerals of reference indicate like parts in the differentviews.

Referring to the drawings, 1 represents the base of a substantially Hform; 2 the posts or u prights preferably of the adjustable form shown;and 3 the body of the horse or like member of a gymnasium apparatus, andof any usual construction.

12, are central caster housings arranged at the respective ends of thebase 1 of the apparatus, and adapted to house the vertically adjustablecasters and the means by which they are guided in their verticaladjustment, as hereinafter more fully described.

13, are the casters of any usual construc tion, and which are secured tohorizontal plates 14L arranged in vertical containing recesses formed inthe caster housing 12 aforesaid; the vertical walls 15 of said recessesacting as guides for the plates 14, while the lower ends of said wallsare inturned to form stops 16 to limit the downward adjusting movementof said plates.

17 are removable cover plates for the containing recesses aforesaid;said plates are provided with apertures 18 and pivot ears 19 for thepassage of and pivotal supportof the operating cam levers now to bedescribed.

20 are the cam levers, arranged in pairs, each formed with an eccentricbody portion and an angularly extending operating arm 21. Said camlovers are pivotal between the pivot ears 19 aforesaid, and extend downthrough the apertures 18 to have bearing upon the caster carrying plateslet, as illustrated in Figs. 2 and 3. In one position said cam leversare adapted to move the caster carrying plates downward with relation tothe base, to support the apparatus upon the casters, as illustrated inFig. 2, in the operation of moving the apparatus from one place toanother; while in their other position said cam levers permit thecasters and caster carrying plates to ascend within the caster housingof the base, leaving said base resting solidly upon the floor. With thedescribed central arrangement of the casters, the transverse extensionsof the base 1 are adapted to afford trailing support to the apparatuswhen moved from place to place, and prevent the apparatus from tippingover.

Having thus fully described my said invention what I claim as new anddesire to secure by Letters Patent is 1. The combination of a supportingbase having transverse extensions at each end, casters arranged at themid-length of said extensions and comprising caster carrying platesmoving vertically in containing recesses formed therefor in thetransverse eX- tensions aforesaid, casters carried by said plates, andmeans for imparting vertical adjustment to said plates, substantially asset forth.

2. The combination of a supporting base having transverse extensions ateach end, casters arranged at the mid-length of said extensions andcomprising caster carrying plates moving vertically in containingrecesses formed therefor in the transverse eX- tensions aforesaid,casters carried by said plates, and means for imparting verticaladjustment to said plates, the same comprising operating cam levershaving eccentric body portions and angularly extending operating arms,substantially as set forth.

8. The combination of a supporting base having transverse extensions ateach end, casters arranged at the mid-1ength of said extensions andcomprising caster carrying plates moving vertically 1n containingrecesses formed therefor in the transverse extensions aforesaid, saidrecesses having vertical Walls inturned at their lower ends to formstops, casters carried by said plates and means for imparting verticaladjustment to said plates, substantially as set forth.

4. The combination of a supporting base having transverse extensions ateach end, casters arranged at the mid-length of said extensions andcomprising caster carrying cesses formed therefor in the transverse ex-.tensions aforesaid, said recesses having vertical Walls inturned attheir lower ends to form stops, casters carried by said plates, andmeans for imparting vertical adjustment to said plates, the samecomprising cover plates arranged at the top of the containing recessesaforesaid, cam levers pivoted to said cover plates and having eccentricbody portions bearing against the caster car- Tying plates and operatingarms, substantially as set forth.

Signed at St. Louis, Missouri, this 80th day of January 1907.

FREDERICK MEDART. Witnesses:

WILLIAM WINTER,

plates moving vertically in containing re- LoUIs MENADIER.

